Re: Multi-homing APNs in GPRS/UMTS

In article <ca7stv$22ub$1@sf1.isc.org>, Paul Vixie <vixie@sa.vix.com>
wrote:

> I believe that a DNS TTL of zero is well specified, though ill-advised.

IIRC, BIND 4.8 (which was at one time the most common BIND release on
the Internet, and is probably still in heavy use) had some problems with
zero TTLs. I remember when we were first starting to use Cisco
Distribute Directors there were some sites that had trouble accessing
the sites whose DNS was being hosted on them. The problems went away
when we reconfigured the DD's to use TTL=1.

--
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
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